2006 INFINITI M35 Factory Service Manual

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Page 2121 of 5621

INFINITI M35 2006 Factory Service Manual EC-578
[VQ35DE]
DTC P1572 ICC BRAKE SWITCH
Revision: 2006 January2006 M35/M45
Wiring Diagram NBS00554
TBWT0984E

Page 2122 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1572 ICC BRAKE SWITCH
EC-579
[VQ35DE]
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EC
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTI

Page 2123 of 5621

INFINITI M35 2006 Factory Service Manual EC-580
[VQ35DE]
DTC P1572 ICC BRAKE SWITCH
Revision: 2006 January2006 M35/M45
2. CHECK OVERALL FUNCTION-II
With CONSULT-II
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Without CONSU

Page 2124 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1572 ICC BRAKE SWITCH
EC-581
[VQ35DE]
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EC
Revision: 2006 January2006 M35/M45
4. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector E102
10A fuse
Harn

Page 2125 of 5621

INFINITI M35 2006 Factory Service Manual EC-582
[VQ35DE]
DTC P1572 ICC BRAKE SWITCH
Revision: 2006 January2006 M35/M45
9. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch (1) harness con

Page 2126 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1572 ICC BRAKE SWITCH
EC-583
[VQ35DE]
C
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EC
Revision: 2006 January2006 M35/M45
10. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector E101
10A fuse
Har

Page 2127 of 5621

INFINITI M35 2006 Factory Service Manual EC-584
[VQ35DE]
DTC P1572 ICC BRAKE SWITCH
Revision: 2006 January2006 M35/M45
Component InspectionNBS00556
ICC BRAKE SWITCH
1. Turn ignition switch OFF.
2. Disconnect ICC brake switch harness connecto

Page 2128 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1572 ASCD BRAKE SWITCH
EC-585
[VQ35DE]
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EC
Revision: 2006 January2006 M35/M45
DTC P1572 ASCD BRAKE SWITCHPFP:25320
Component DescriptionNBS00557
When the brake pedal is

DTC P1572 ASCD BRAKE SWITCH
EC-585
[VQ35DE]
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Revision: 2006 January2006 M35/M45
DTC P1572 ASCD BRAKE SWITCHPFP:25320
Component DescriptionNBS00557
When the brake pedal is depressed, ASCD brake switch (2) is
turned OFF and stop lamp switch (1) is turned ON. ECM detects the
state of the brake pedal by this input of two kinds (ON/OFF signal).
Refer to EC-36, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)"
for the ASCD function.
CONSULT-II Reference Value in Data Monitor ModeNBS00558
Specification data are reference values.
On Board Diagnosis LogicNBS00559
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-496, "
DTC P0605 ECM" .
This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not
stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed.
1st trip DTC is erased when ignition switch OFF. And even when malfunction A is detected in two
consecutive trips, DTC is not stored in ECM memory.
PBIB2705E
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW1
(ASCD brake switch)
Ignition switch: ONBrake pedal: Fully released ON
Brake pedal: Slightly depressed OFF
BRAKE SW2
(Stop lamp switch)
Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1572
1572ASCD brake
switchA)When the vehicle speed is above 30 km/h
(19 MPH), ON signals from the stop lamp
switch and the ASCD brake switch are
sent to the ECM at the same time.
Harness or connectors
(The stop lamp switch circuit is shorted.)
Harness or connectors
(The ASCD brake switch circuit is shorted.)
Stop lamp switch
ASCD brake switch
Incorrect stop lamp switch installation
Incorrect ASCD brake switch installation
ECM B)ASCD brake switch signal is not sent to
ECM for extremely long time while the
vehicle is driving.

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